Established by Security Council resolution 745 (1992) of 28 February 1992, and fully operational by 15 March 1992, the United Nations Transitional Authority in Cambodia (UNTAC) was created to ensure the implementation of the Agreements on a Comprehensive Political Settlement of the Cambodia Conflict (a.k.a. The Paris Agreements), signed on 23 October 1991.
Upon its realisation, UNTAC absorbed the United Nations Advance Mission in Cambodia (UNAMIC), which had been formed immediately following the signing of the Agreements. UNTAC, in consultation with Cambodia's interim government, the Supreme National Council of Cambodia (SNC), worked on a number of matters, including: the carrying out of nationwide elections, the promotion of human rights, peacekeeping among military factions, the maintenance of law and order, the repatriation of Cambodian refugees, the creation of a sound civil administration, and the rehabilitation of Cambodia's economic infrastructure.
Accordingly, UNTAC consisted of seven key components: human rights, electoral, military, civilian police, civilian administration, repatriation, and rehabilitation.
Throughout the duration of UNTAC, Mr. Yasushi Akashi served as special representative of the Secretary-General (SRSG) and head of mission (HoM), while Lieutenant-General John Sanderson acted as force commander (FC).
UNTAC's mandate ended on 24 September 1993 with the promulgation of Cambodia's constitution and the formation its new government.